- creeper, tree creeper - any of various small insectivorous birds of the northern hemisphere that climb about on trees
--1 is a kind of oscine, oscine bird
--1 is a member of Certhiidae, family Certhiidae
--1 has particulars:brown creeper, American creeper, Certhia americana; European creeper, Certhia familiaris; wall creeper, tichodrome, Tichodroma muriaria - woodhewer, woodcreeper, wood-creeper, tree creeper - any of numerous South American and Central American birds with a curved bill and stiffened tail feathers that climb and feed like woodpeckers
--2 is a kind of tyrannid
--2 is a member of Dendrocolaptidae, family Dendrocolaptidae